Mitsubishi Rayon Company, Limited

Shunsuke Chatani

Toshiaki Hattori

A molded product having a phase separation structure formed by photopolymerization of a photopomerizable composition and imparting a sharp diffraction spot at a high diffraction efficiency, and a method for manufacturing same are provided. The molded product () comprises a matrix () and a multiple columnar structures () disposed within the matrix () and having an index of refraction different from the matrix (), wherein the half width of a diffraction spot is 0.6&#xb0; or less and diffraction efficiency is 10% or greater in an angular spectrum obtained by irradiation with a laser beam having an intensity distribution of standard normal distribution and a half width of the intensity distribution of 0.5&#xb0;. The multiple columnar structures () are oriented in approximately the same direction, and are aligned in a regular lattice on a plane perpendicular to said orientation direction.

Molded product

A molded product having a phase separation structure formed by photopolymerization of a photopolymerizable composition and imparting a sharp diffraction spot at a high diffraction efficiency, and a method for manufacturing same are provided. The molded product () comprises a matrix () and a multiple columnar structures () disposed within the matrix () and having an index of refraction different from the matrix (), wherein the half width of a diffraction spot is 0.6&#xb0; or less and diffraction efficiency is 10% or greater in an angular spectrum obtained by irradiation with a laser beam having an intensity distribution of standard normal distribution and a half width of the intensity distribution of 0.5&#xb0;. The multiple columnar structures () are oriented in approximately the same direction, and are aligned in a regular lattice on a plane perpendicular to said orientation direction.

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Otake, Japan

Shunsuke Chatani